Oil-measuring device for gas-machines.



- M. LAUX.

OIL MEASURING DEVICE POR GAS MACHINES. n IIIIIIIIIIIIIII EB, 111111 a.

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/f IIIIIIIIIII mun f UNITED sTATEs PATENT oEEIoE.

MATHIAS LAUX, OF ST. LOUIS, MISSOURI,v ASSIGNOR TO AERO-GAS MACHINE COM- PANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF MAINE.

Specification of Letters Patenti.

Patented Sept. 8, 1914.

Application filed February 28, 1913. Serial No. 751,210.

T o all whom it may concern.'

Be it known that I, MATHIAS LAUX, a.

citizen of the United States, residing at St.

Louis, Missouri, have invented a certainthat is supplied to the carbureter of the machine.

Measuring devices of the character abovementioned usually comprise a chamber intoV which charges of hydro-carbon Oil are pumped, a conduit leading from said chamber-to the carbureter of the machine so as 'to supply the oil tothe carbureter, and an adjustable device for permitting all over a predetermined quantity of the hydro-carbon oil to escape from said measuring chamber back to the source of supply from which the oil is drawn, thereby causing the charges of oil that are supplied to the chamber to be measured so that only the required amount? of oil will be supplied tol the carbureter.

One object of my present invention is to provide a measuring device of simple construction which is so designed that. it is not liable to be rendered inoperative by the paraliin and other foreign matter in the hydrocarbon oil that is .supplied to the measuring chamber of the device. f

Another object is to provide 'a measuring device for the purpose'described which is so designed that a vacuum or partial vacuum cannot be created in the measuring chamber and thus cause the device to become air-locked to such an extent that the hydro-carbon oilI will not iow out of said chamber to the carbureter and to the source of supply.

A Another object is to provide an oilmeasuring device for gas machines in which the means that regulates the quantity of oil which is supplied to the carbureter is so designed that frequent adjustment of same will not result in an open joint through which the measured oil can escape from the `measuring chamber back to the source of supply. And still another object is to provide an oil-measuring device having a normally stationary valve for controlling the escape of the measured oil to the carbureter and an overflow controlling device which is so designed that the oil can be measured accurately.

Other objects and desirable features of my invention will be hereinafter pointed out.

Figure 1 of the drawings is an end elevational View of a measuring -device constructed in accordance with myI invention; Fig. 2 is a vertical longitudinal sectional view of said device; Fi-g.r3 is a transverse sectional view taken on the line 3-3 of Fig. 2; Fig. 4 is a perspective view of the adjustable element or part of the means that permits all over a certain quantity of oil to escape back to the source of supply; Fig. 5 is a horizontal sectional view taken on the line 5 5 of Fig. 3; and Fig. 6 is a vertical sectional view illustrating a slight modification of my invention.

Referring to Figs. 1 to 5 of the drawings which illustrate one fobrm of my invention, A designates a chamber to which hydro-carbon oil is supplied, preferably by means of a pipe 1 that enters the side of said chamber at approximately the middle of same, as shown in Fig. 2. .A pipe 2 is provided for conveying the measured quantity of oil to the carbureter, not shown, and a pipe 3 is provided for conducting the surplus oil or all over the measured quantity,` back to the source of supply, not shown. The pipes 2 and 3 can be connected to the casing 4 of the measuring chamber in various ways but I prefer to provide the casing 4 with two bosses 5 and 6 to which the pipes 2 and 3, respectively, are connected by means of internally screw-threaded nipples 7. The means for controlling the escape of the surplus oil from the chamber A into the pipe 3 consists of a stationarytubular-shaped member8 provided with a slot or opening 9 and a movable tubular-shaped member 10 arranged inside of the member 8 and provided with a coperating slot or opening 11, the

member 10 being adapted to be moved with relation to the member 8 so as to bring said openings into or out of registration with each other. The stationary member 8 is arranged vertically in the measuring chamber A and projects through an opening in the boss G on the under side of the casing 4 and also through a boss 12 on the upper side of said casing, said member 8 being permanently connected to said casing so that the oil cannot leak around same and thusescape from the measuring chamber. The opening 9 in the member 8 is preferably oblongshaped and is vertically-disposed, and the opening 11 in the movable member 10 is oblong-shaped but it is arranged spirally or at a slight angle to the opening 9, as shown in Figs. 1, 2 and 3, so that when the member 10 is turned into such a position that its opening registers with the opening 9 a portion of the stationary member 8 will lap over a portion of the inclined slot 11 in the mov able member 10 and thus form a substantially V-shaped opening, as shown in Figs. 1 and 3, through which the surplus oil can escape from the measuring chamber into (the overflow pipe 3. The member 10 is provided at its upper end with an enlarged head 13 that bears upon the upper side of the boss 12 and thus prevents the member 10 from moving downwardly through the member 8, and a groove 14 is formed in said head so as to enable the member 10 to be turnedby means o a screw-driver or other suitable tool. When the member 10 is adjusted in the positionshown in Fig. 1, the oil level in the measuring chamber will be established at the point indicated by the dotted line 'in Fig. 1, all the oil in the chamber A above the point indicated by the line escaping lfrom said chamber into the overlow pipe 3 through the substantially V-shaped opening formed by coperating portions of the slots in the members 8 and 10 and thiis causing only a predetermined quantity of Oil to be supplied to the carbureter through the pipe 2. i

A valve is provided for regulating the flow of the measured oil from the chamber A into the pipe 2 that leads to the carbureter, and 1n the preferred form of my invention, as herein shown, thevalve that is used for this purposeconsists of a needlevalve 15 that projects into an opening 16. which establishes communication between the chamber A and the pipe 2. The stem of,

abling said valve to be adjusted so as to vary the size of the opening through which the oil escapes into the pipe 2. In practice, the

. valvel is adjusted so that the oil will es-l cape slowly from the chamber A into the pipe 2, and said pipe 2 is large enough so thatit will never be completely filled by the oil that ows through same. The object of vacuum or partial vacuum from being created in the measuring chamber. In the form of my invention herein shown a verticallydisposed vent-pipe 18 that is mounted in the boss 5 projects upwardly into the measuring chamber, as shown in Fig. 2, and thus supplies suiiicient air to the upper portion of said chamber to prevent it from becoming air-locked to such a degree that the oil will not How from said chamber through the opening 16 and through the overflow opening in the adjustable.level-controlling member 10. The casing 4 is substantially cylindrical-shaped and is arranged horizontally, and pieces of glass 19 are set in the ends of said casing 4 so as to form transparent end walls for the measuring chamber. lIt" desired, removable caps 2O can be mounted on the ends of the casing 4 so as to protect the glass end walls of the measuring chamber, and caps 21 are preferably mounted on the bosses 12 and 17 so as to prevent the valve 15 and the level-controlling device from being tampered with. The head 13 of the member 10 may be provided with graduations 13a or some other suitable means for indicating the quantity of oil that is meas-v ured and supplied to the carbureter when the member 10 is adjusted in certain positions. If desired, the casing 4 may be arranged vertically, as shown in Fig. 6, instead of hor-` there is no tendency for the oil to leak out of the measuring chamber around the means 8. The member 10 can be adjusted easily owing to the fact that it is adjusted by turning or rotating same; no locking means is required to hold it in adjusted position; and

as the coperating slots in the members 8 and 10 form a substantially V-shaped overflow opening the oil can be measured accurately.

The air that is supplied to the measuring chamber through the vent-tube 18 eliminates the possibility of the oil failing to iow out tothe atmosp `measuring chamber, the device complies with the requirements of the {ire-underwriters which in certain instances prohibit any kind of a hydro-carbon oil-containing chamber on a gas machine from being vented ere.V

Still another desirable feature of my device is that the valve which governs the flow of the oil to the carbureter is normally stationary. Consequently, there is -no danger of the devicefailing to operate properly on account of paraiiin or other foreign matter in the oil collecting on the valve and thus preventing it from opening as might occur if the valve 15 was a movable valve that operated intermittently to open and close the port through whichtheoil escaped to the carbureter.

Having thus described my invention, what I claim as-new and desire to secure by Letters Patent is:

1. In a gas machine, an oil-measuring de-V vice comprising a closed chamber to which charges of oil are supplied, adjustable means for permitting.;` all over a certain quantity of a charge of oil that is supplied tosaid chamber at one time to escape from said chamber,

a discharge port through which the measured oil escapes from said chamber to a conduit leading to the carbureter of the machine, a normally stationary needle. valve coperating with said discharge port for regulating the flow of the measured oil from' said chamber, and means whereby air from the carbureter is supplied to said measuring chamber so as to prevent a vacuum or partial vacuum from being createdg in4 said chamber.`

2. An oil-measuring device for gas machines, comprising a closed chamber to which oil is supplied', adjustable means lfor permitting all over a certain quantity of the oil that is supplied to said chamber at one period to escape from said chamber back to -the source of supply, a conduit leading from said chamber -to the carbureter of the machine, an adjustable valve that is normally Vstationary for controlling the. flow-of the measured oil from said chamber into said conduit, and a vent pipe arranged wholly within said measuring chamber vfor estab' lishing communication between the interior of said conduit and said measuring chamber. j

3. An oil-measuring device for gas ma chines, comprising a closed chamber to Vwhich oil is supplied, a stationary tubularshaped member arranged inside of saidy chamber and permanently` connected to the casing of the chamber, an adjustable tubular-shaped member rotatably mounted in the stationary member, and coperating elongated slots in' said members, one of said slots being disposed at an angle to the other soas to form a discharge opening of gradually inlreasing width from its lower to its upper en 4. A measuring device for gas machines, comprising a casing that forms a closed measuring chamber to which oil is supplied, a stationary tubular-shaped member permanently connected to said casing and arranged in said chamber, said member, being provided with a vertically disposed elongated slot, a `rotatable tubular-shaped member arranged inside of said stationary member in snug engagement with same and provided with an elongated slot that extends at an angle across the slot in the stationary memf" ber so as to form an overflow'opening of gradually increasing width from its lower to its upper end, and means for preventing said rotatable member from moving longitudinally with relationl to said stationary member.

5. An oil-measuring device for gas machines consisting of avcasing that forms a measuring chamber to which oil is supplied, an overflow pipe connected to said casing, a carbureter supply pipe connected to` said casing, two telescoped tubular-shaped members provided with cooperating elongated slots arranged at an angle with relation to each other so as to forman overiiow opening of gradually increasing width from its lower to its upper end through which all over a certain quantity of the oil supplied ico to said chamber' at one period can escape munication between said carbureter supply pipe andthe interior of said` casing.

6. An oil-measuring device for gas machines comprising a casing that forms a vclosed measuring chamber to which oil is` supplied, two bosses on the under side of said casing to which an overflow pipe and a carbureter supply plpe are adapted e to be connected, a stationary tubular-shaped mem- -ber arranged insideof said casing andl per-A manently connected to the boss to which the overiiow pipe is fastened, an adjustable `tubular-shaped member telescoped in said stationary member and provided at its upper end vwith'an enlarged head that laps overthe upper end of the stationary mem-v ber, said tubular-shaped members having registering openings, a needle valve adjustably mounted in said casing and having a pointed end that projects into `a discharge In testimony whereof hereunto aixmy port in the boss to which the carbureter supsignature in the presence of two Witnesses, Y

ply-pipe is connected, and a vent-pipe in this twenty second day of FebruarylQlB. said boss Whose -upfper end terminates inl MATHIAS LAUX. 5 side of' said measuring chamber at a point Witnesses: ,l -above the normal level. of the oil in said WELLS L. CHURCH,

chamber. GEORGE BAKEWELL. 

